81251940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:482

約数の個数: 192

約数和(自身を含む): 290949120

約数和(自身を除く): 209697180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 28, 30, 33, 35, 42, 43, 44, 55, 60, 66, 70, 77, 84, 86, 105, 110, 129, 132, 140, 154, 165, 172, 210, 215, 220, 231, 258, 301, 308, 330, 385, 409, 420, 430, 462, 473, 516, 602, 645, 660, 770, 818, 860, 903, 924, 946, 1155, 1204, 1227, 1290, 1419, 1505, 1540, 1636, 1806, 1892, 2045, 2310, 2365, 2454, 2580, 2838, 2863, 3010, 3311, 3612, 4090, 4499, 4515, 4620, 4730, 4908, 5676, 5726, 6020, 6135, 6622, 7095, 8180, 8589, 8998, 9030, 9460, 9933, 11452, 12270, 13244, 13497, 14190, 14315, 16555, 17178, 17587, 17996, 18060, 19866, 22495, 24540, 26994, 28380, 28630, 31493, 33110, 34356, 35174, 39732, 42945, 44990, 49665, 52761, 53988, 57260, 62986, 66220, 67485, 70348, 85890, 87935, 89980, 94479, 99330, 105522, 123109, 125972, 134970, 157465, 171780, 175870, 188958, 193457, 198660, 211044, 246218, 263805, 269940, 314930, 351740, 369327, 377916, 386914, 472395, 492436, 527610, 580371, 615545, 629860, 738654, 773828, 944790, 967285, 1055220, 1160742, 1231090, 1354199, 1477308, 1846635, 1889580, 1934570, 2321484, 2462180, 2708398, 2901855, 3693270, 3869140, 4062597, 5416796, 5803710, 6770995, 7386540, 8125194, 11607420, 13541990, 16250388, 20312985, 27083980, 40625970, 81251940]

約数ペア:

[(1, 81251940), (2, 40625970), (3, 27083980), (4, 20312985), (5, 16250388), (6, 13541990), (7, 11607420), (10, 8125194), (11, 7386540), (12, 6770995), (14, 5803710), (15, 5416796), (20, 4062597), (21, 3869140), (22, 3693270), (28, 2901855), (30, 2708398), (33, 2462180), (35, 2321484), (42, 1934570), (43, 1889580), (44, 1846635), (55, 1477308), (60, 1354199), (66, 1231090), (70, 1160742), (77, 1055220), (84, 967285), (86, 944790), (105, 773828), (110, 738654), (129, 629860), (132, 615545), (140, 580371), (154, 527610), (165, 492436), (172, 472395), (210, 386914), (215, 377916), (220, 369327), (231, 351740), (258, 314930), (301, 269940), (308, 263805), (330, 246218), (385, 211044), (409, 198660), (420, 193457), (430, 188958), (462, 175870), (473, 171780), (516, 157465), (602, 134970), (645, 125972), (660, 123109), (770, 105522), (818, 99330), (860, 94479), (903, 89980), (924, 87935), (946, 85890), (1155, 70348), (1204, 67485), (1227, 66220), (1290, 62986), (1419, 57260), (1505, 53988), (1540, 52761), (1636, 49665), (1806, 44990), (1892, 42945), (2045, 39732), (2310, 35174), (2365, 34356), (2454, 33110), (2580, 31493), (2838, 28630), (2863, 28380), (3010, 26994), (3311, 24540), (3612, 22495), (4090, 19866), (4499, 18060), (4515, 17996), (4620, 17587), (4730, 17178), (4908, 16555), (5676, 14315), (5726, 14190), (6020, 13497), (6135, 13244), (6622, 12270), (7095, 11452), (8180, 9933), (8589, 9460), (8998, 9030)]